Dufus - I meant stratum 1 !!! Thanks for the info. NO need to build a PPS kernel then !
David David Woolley wrote: > In article <[EMAIL PROTECTED]>, > "DJ" <[EMAIL PROTECTED]> wrote: > > > use of fudge time1 I can get my ntpd to act as a stratum 0 server and > > You mean stratum 1. A value of 0 indicates unsynchronised. The reference > clock will be stratum zero, but the NTP protocol will report statum > 1. > > > will track pool ntp servers to within 100ms drift . I wish to improve > > the precision/accuracy and would like to use the PPS kernel/drivers. Is > > this possible with a simple NMEA device i.e. does the PPS kernel patch > > give a better stability or do I need a PPS gps clock ? > > You require a time transfer receiver. Your problems are not fundamental > to NMEA, but navigation receivers will generally not pay attention to > accurate timing of the time messages and even time transfer receivers > may assume that their PPS output is accurate, so the NMEA doesn't need > to be. I don't know if there are any time transfer receivers without > PPS, although, if there are, they would, presumably have low jitter > NMEA outputs. > > The ntpd PPS code is of no benefit unless the receiver generates an > accurate PPS signal. _______________________________________________ questions mailing list [email protected] https://lists.ntp.isc.org/mailman/listinfo/questions
